CHAPTER
76
Engine Control PW
777 AIRCRAFT MAINTENANCE MANUAL 
CHAPTER 76 Engine Control PW
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CHAPTER 76 
Engine Control PW
CH-SC-SU  Subject  Page  Effectivity  
76-00-00  ENGINE CONTROLS -INTRODUCTION  2  BEJ ALL  
76-00-00  ENGINE CONTROLS -GENERAL DESCRIPTION  4  BEJ ALL  
76-00-00  ENGINE CONTROLS -COMPONENT LOCATIONS  6  BEJ ALL  
76-00-00  ENGINE CONTROLS -SWITCHES -COMPONENT LOCATIONS  8  BEJ ALL  
76-00-00  ENGINE CONTROLS -THRUST LEVER & AUTOTHROTTLE ASSEMBLY  11  BEJ ALL  
-FUNCTIONAL DESCRIPTION  
76-00-00  ENGINE CONTROLS -TLA RESOLVER  14  BEJ ALL  
76-00-00  ENGINE CONTROLS -FUEL CONTROL SWITCHES -FUNCTIONAL  16  BEJ ALL  
DESCRIPTION  
76-00-00  ENGINE CONTROLS -OPERATION  19  BEJ ALL  
76-00-00  ENGINE CONTROLS -TRAINING INFORMATION POINTS  22  BEJ ALL 
76-CONTENTS 
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PW4000 SERIES ENGINES
777 AIRCRAFT MAINTENANCE MANUAL
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ENGINE CONTROLS -INTRODUCTION
General * TO/GA -takeoff/go-around 
* TRA -thrust resolver angle The engine controls system supplies most of the control signals * T/R -thrust reverser the engine needs to operate. It also controls inputs to other airplane systems that require engine control status. 
The engine controls system includes these components: 
* 
Thrust levers
* 
Fuel control switches
* 
Autothrottle servo motors
* 
Thrust lever switches
* 
Switch pack
* 
Thrust lever angle (TLA) resolvers.
Abbreviations and Acronyms 
* 
AIMS -airplane information management system
* 
ASM -autothrottle servo motor
* 
ATA -air transport association
* 
A/T -autothrottle
* 
EDIU -engine data interface unit
* 
EEC -electronic engine control
* 
ELMS -electrical load management system
* 
EPCS -electronic propulsion control system
* 
EPR -engine pressure ratio
* 
ERU -engine relay unit
* 
FMU -fuel metering unit
* 
GSE -ground support equipment
* 
IDG -integrated drive generator
* 
MFD -multi-function display
 
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